
A flexible constitution is one that can be easily amended or changed through ordinary legislative processes, allowing for more fluid and adaptable governance. The British Constitution is a prime example of this, as the UK Parliament can alter constitutional principles through ordinary legislative processes. This is in contrast to a rigid constitution, like the US Constitution, which can only be changed through special amending procedures. The US Constitution does, however, have some built-in flexibility through the Elastic Clause, the amendment process, and judicial interpretation. These mechanisms allow the Constitution to adapt to new circumstances and societal changes over time, ensuring its continued relevance and effectiveness.
| Characteristics | Values |
|---|---|
| Type of Constitution | Flexible |
| Country | United Kingdom |
| Codified | No |
| Written | No |
| Amending Process | Ordinary legislative process |
| Adaptability | High |
| Emergency Provisions | Yes |
| Examples | British Constitution, Canadian Constitution |
| Implied Powers | Yes |
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What You'll Learn

The British Constitution is flexible
The British Constitution is an example of a flexible constitution. Unlike most countries, the UK does not have a codified constitution, meaning there is no single document that outlines the framework of the government. Instead, it is a combination of written and unwritten arrangements, including statute law, common law, conventions, and works of authority. This lack of formal entrenchment allows for easy modification, as no special legal procedure or amending process is required to change the constitution.
The flexibility of the British Constitution can be seen in its ability to evolve over hundreds of years without being wiped away by revolutions or enemy invasions, as has happened in other countries. This flexibility provides adaptability and enables the government to respond to changing circumstances and needs. For example, the composition of the House of Lords was changed by Parliament through the passing of the 1999 Act, with no power for the Judiciary to challenge this.
The UK's flexible constitution also allows for the establishment of traditions or ways of doing business that can help navigate crises and new challenges. For instance, the role of cabinet officers is unwritten and has proven useful. Additionally, the UK's constitution is bound to international law, with Parliament increasing its practical power through cooperation with international organisations such as the United Nations and the European Convention on Human Rights.
However, it is important to note that while the British Constitution is flexible, some aspects, such as statutes and common-law principles of constitutional import, are treated as permanent and cannot be changed as easily as other rules. The principle of the "rule of law" has been an essential element of the British constitution since approximately the late 17th century, maintained by a broad consensus between the crown, political leaders, and citizens.
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Elastic Clause
A flexible constitution is one that can be easily amended or changed through ordinary legislative processes, allowing for more adaptable governance. The US Constitution, for example, is considered rigid as it can only be changed through special amending procedures.
The Elastic Clause, also known as the Necessary and Proper Clause, is a part of the US Constitution that provides some flexibility. It is found in Article I, Section 8, and states that Congress has the power:
> [T]o make all Laws which shall be necessary and proper for carrying into Execution the foregoing Powers, and all other Powers vested by this Constitution in the Government of the United States, or in any Department or Officer thereof.
This clause grants Congress implied powers in addition to its enumerated powers. It has been interpreted as allowing Congress to employ any means that are "appropriate and plainly adapted" to achieve its constitutionally permitted ends.
The Elastic Clause has been a source of controversy, with Anti-Federalists arguing that it grants the federal government boundless power. In McCulloch v Maryland (1819), the Supreme Court ruled that Congress had the power to create a national bank, even though this right is not explicitly stated in the Constitution. This was based on the interpretation that the Elastic Clause gives Congress implied powers to achieve its express powers, such as taxation and spending.
Another example of the Elastic Clause being used is the Commerce Clause, which has been used to justify the government's power to regulate the economy.
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Amendment Process
A flexible constitution is one that can be easily amended or changed through ordinary legislative processes. This means that the government can alter constitutional principles and define new baselines for government action without needing special amending procedures. An example of a flexible constitution is the British Constitution, where Parliament can change the constitution through ordinary legislative processes.
The United States Constitution, on the other hand, is a rigid constitution that can only be amended through a specific process outlined in Article V. The amendment process in the US involves the following steps:
Proposal
An amendment may be proposed by Congress with a two-thirds majority vote in both the House of Representatives and the Senate, or by a constitutional convention called for by two-thirds of the state legislatures. The proposal takes the form of a joint resolution, which is then sent directly to the National Archives and Records Administration (NARA) for processing and publication.
Ratification
Once the proposal is received by NARA, it is published in slip law format along with legislative history notes. NARA also assembles an information package for the states, which includes formal copies of the joint resolution. The amendment becomes part of the Constitution as soon as it is ratified by three-fourths of the states (38 out of 50).
Certification
Upon receiving the required number of authenticated ratification documents, NARA drafts a formal proclamation for the Archivist to certify that the amendment is valid and has become part of the Constitution. This certification is published in the Federal Register and serves as official notice to Congress and the nation that the amendment process is complete.
The amendment process in the US is deliberately difficult and time-consuming, with only 27 amendments made since the Constitution was drafted in 1787. This ensures that any changes to the Constitution are carefully considered and have a significant impact on the nation.
While a flexible constitution allows for more adaptable governance, it may also lead to frequent changes and less stability compared to a rigid constitution.
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Judicial interpretation
The legislative branch has significant authority in revising constitutional provisions within flexible systems, reflecting their role as representatives of the people. They initiate amendments to adapt the legal framework to contemporary needs. Judicial interpretation plays a critical role in interpreting and adapting constitutional provisions to align with contemporary values and social norms. Courts interpret constitutions to address issues not foreseen by their framers, often expanding or restricting rights based on evolving societal needs. For example, privacy and equal protection rulings by the US Supreme Court demonstrate how judicial rulings can reshape constitutional understanding without formal amendments.
In some jurisdictions, constitutional courts can invalidate amendments that violate core values, maintaining a balance between flexibility and stability. These checks ensure constitutional adjustments serve broader societal interests while safeguarding foundational principles. Judicial oversight enforces these limits, with courts reviewing proposed amendments for compliance with entrenched principles.
Overall, judicial interpretation of a flexible constitution allows for adaptation to modern challenges and ensures that the constitution remains relevant and responsive to societal needs. It plays a critical role in balancing flexibility and stability, maintaining the integrity of the constitution while allowing for necessary changes.
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Unwritten Constitution
An unwritten constitution is based on a collection of laws, customs, and precedents, as well as traditions and practices that have evolved over time. It is not codified in a single document, making it more dynamic and
The UK's unwritten constitution, for example, includes the Fixed-term Parliaments Act 2011, which ensures a general election every five years, subject to two exceptions. One of the benefits of an unwritten constitution is its ability to adapt to changing needs, values, and customs. It can be changed through ordinary legislative processes, allowing for more fluid and adaptable governance.
However, an unwritten constitution may also lead to greater uncertainty and make the legal system more vulnerable to an abuse of authority. It may not provide as much stability as a rigid constitution, with constitutional principles subject to more frequent changes.
Ultimately, whether a country has a codified or uncodified constitution depends on its history, culture, and political context. A constitution should outline the rules and responsibilities of a country's government and its citizens, providing a framework for stable governance and protecting citizens' rights.
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Frequently asked questions
A flexible constitution is a type of constitution that can be easily amended or changed through ordinary legislative processes.
The British Constitution and the Canadian Constitution are examples of flexible constitutions.
A flexible constitution allows for more fluid and adaptable governance, as the government can respond to changing circumstances and needs.
Constitutional principles may be subject to more frequent changes and may not provide as much stability as a rigid constitution.








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